Box motion for looms



May l, 1928.

1,668,146 A. A. GORDON BOX MOTION FOR LOOMS Filed April 29. 1926 4 Sheets-Sheet l www 6 A /Wfwf May 1, 192s.

4 Sheets-Sheet 2 A. A. GORDON BOX MOTION FOR LOOMS Flled Agl 29.

ik w

May 1, 192s." 1,668,146

A. A. GORDON BOX MOTION FOR LOOMS Filed April 59. l*26 4 Sheets-Sheet 3 ,W//f w/// w @l aux as".

67 I ilk 67 6, "1, 64 5J l 50 45,', fl, 40 3 1, I 4663 I e v livel/for May 1, 192s. 1,668,146

A. A. GORDON BOX MOTION FOR LOOMS Filed April 29. 1926 4 Sheets-Sheet 4 Patented May Il, v1,928.V

UNITED STATES ALBERT A.. GORDON,y E WORCESTER, MASSACHSE'TTS, ASsIGNoR TofCRoMPToN a PATENT oFFl-cE. g

xNoWLEs Looml WoRxsoE WORCESTER, MASSACHUSETTS, A CORPORATION ,or

MASSACHUSETTS.

' Application led April 2 9, 1926. SerialiNo. 105,593. n y

This invention lrelates to improvements in loom box motions and it is the general object of the invention to vprovide an improved motion which can bemade self-oiling by the use of an oil box or case.`

Box motionslfor looms 'usually employ a regularly moving part and in addition em-l ploy also other parts which are moved yonly when a changev in the active shuttle is required. It is an important object of my invention to placethe otherv parts above ythe regularly moving part and cause portions of the latter toy dip intothe oil of the oil well.

Inbox motions of the Crompton type there is usually provided a master gear having a plurality of angularly spacedsegnients of gear teeth.y which cooperate with rpinions to raise and lower the box lever. The pinions have associated therewith which are controlled by levers and ity isla further object of my invention to dispose the levers and slidinof teeth in `suoli a way that the lifter rods for said levers `will be out of the vplane ofthe segments so that as the latter rotates' oil will `not be splashed" through the holes p'rovided'in the top of the v v case for said rods.- f -f Box motions of the type specified are pro` vided with upwardly extending linls'which are attached to the boxvr lever and itis a.

- further object of my invention to provide a cover which engages the casealong the line of the links, thereby facilitating removal of the cover without disturbing the box motion. Itis astill further object of my invention to provide a cam and lever to cooperate with the spring stressed locking levers usually yemployed to position the pinions, said cam ceeds, my'inventifon resides in the combina tion and arrangement` of parts hereinafter described'and set yforthin the claims.

In the 'accompanying vdrawingswherein I have shown a convenientembodiment of my invention, l

Fig. 1 is a side elevationof a loom hav-l sliding teeth the vmaster v.gear and parts controlled' thereby,

Fig. 3 is an enlarged top plan view of the box motion looking: in 'the direction ofar-y row;3,'Fig. 1 with the cover removed7 c i, 1g. 4 1s a verticalV section on line 4-,-4 of Fig. 3, f

rvFig. `5 is a vertical section on line 15;#5

of Fig. 4,

Fig. 6 is a detail view yof the cam secured to the bottom shaft and operating the auxiliary `lever located at the bottom of the motion, f

Figs. 7, 8,"a`nd 9 are diagrammatic views ofcertainA parts of thebox motion showing the relation ofthe cam shown in Fig.y 6 with respect thereto in box' motion, f Fig.v 10 is ahorizontal section taken on line 10-10 of Fig. 1, and f n Figs. 1l and 12 are detail sections on 'lines 11-11 and .12*12 of Fig. 2, respectively.

Referring more particularly to Fig. 1 it will be Seen that I have provided a loom framei having a lay`21 providedwith a plurality of drop boxes 22 which'are supportedby a box lrod 23 the lower end of which' passes through af rocker ironv 24 .mounted on'rocker shaft 25. The boxrod has connected thereto as at 2,6 the lower end y'of a yielding connectorj27' attached as at 28 `to a box lever 29. Said box lever is pivote ally connected as yat30 to a shorter lever 31 pivoted' as' at .32"to' the upper end of a frame 33`-to be describedmore in detail hereinafter. A ydepending llink 34 is pivotally connected as at 35 to llever v31 and a second linkl 36 ispivotally connected as at 37 to the box lever 29, said links 34 and 36 being raised andf lowered to give'the box lever, and hence the boxes, four different posi-l tions. n

The bottom shaft 4,0 is extended beyond successive positions of thek the loom frame 2O and has keyed to the outer end thereof a-*master gear 41 having outerV and inner. segments 42 and 43, respectively,V

of gear teeth. The frame 33 has extending llaterally therefrom a web 44 the lower por-' tion of which merges with a bearing 45 through which the bottom shaft 40 extends.

Arms 46 and 47 extend upwardly, forwardly, and qrearwardly, respectively, fromA the hub .45 and are provided with bearing portions 48 and 49, respectively, throughwh'ichv having'substantially horizontal arms which.

are attached to lifting rods 61 and 6,2., respectively, said arms being :purposely vmade long enoughto extendbeyond the plane of the segments 42 and 43 for a purpose which will appear hereinafter.

Each of the shafts and 5l has keyed thereto a crank plate 63 having aligning pins 64 which cooperate with a locking lever 65 pivotedl on Vpin 6.0 and having'jt'eet 6.7 to` engage the pins 6,4 to position the pinions correctly. The -crank plate which corresponds to shaft V5() has connected thereto the link 34 /while the crank plate corresponding ,to shait .5l is connected to link 36. As shown in Fig. ll the sliding member corresponding to pinion 52 ispro-4 vided with long and short starting teeth' 68 and 69, respectively, while the sliding member corresponding. to pinion 53 has similar long and short starting teeth and 71, respectively, as shown in Fig. l2. The teeth 68 v and 69 cooperate with segment 43 while the teeth 70` and 7l willbe actuated bythe segment 42. As the levers 57 `and 59 rockk on their pivots the relative positions of the starting teeth with regard to their corre` sponding segments will be changed so that as the mastergear 41 rotates one orboth4 of the pinions will be rotated if al movement of lever 29 is desired or ythe .levers 57v and 59 will be unchangedif it is desired to keepl the box lever in the same position for successive picks. The operation of this` 'form of box motion is well known and for further description of the construction and operation reference may be had to Patent No.4

In carrying my invention into effect I pivot an auxiliarylever 72 in a depending extension 7 3 of the bearing 45 and provide said lever withk oppositely extending ngers 74 and 75, respectively, which are notched to receive the lower ends oi ytension springs 76 and 77, the upper ends of which are adjustably connected .to locking levers 65 as shown in Fig. 5. Saidlever 72 is provided with a shoe7 8 which4 is held in contact with a vcam 79 by the springs 76 and-77. [Said:

cam is keyed to the bottom shaft and lies between the master gear 4l and the bearing 45 as shown in 4, 5,`and 6, and is provided with a high point 80 and a low point 8l which together Ywith the remainder of the cani cooperate with. shoe 78'to give-the lever 72 and the springs '76 and 77 `a yrising `and'"falling"movement as the loom operates.

The operation of the cam and parts controlled 'thereby is set forth diagrammatically in Figs. 7, 8, and 9. In Fig. 7 the parts are shown in the position they assume just prior to the enga-gement of one of the segments with its corresponding pinion, .the cam moving inthedirection indicated by the arrow. lImmediately after arrivingin the position shown in Fig. 7 the shoe will travel toward the low point 8i to the position shown in Fi 8.y thus relieving tension ot the .springs 76 and 77 just at the time when the crank plates 63 star-t their rotation. ln this way the pressure of lock levers 65 is reduced during the movement of the pinion `but the high point 890i' the cam is so placed that the lever 72 is depressed quickly just prior to the end ,of the rotary movement of the pinion so that an increased pressure is brought to vbear on .the .pins `64 ot the cam plate 63 to prevent excess movement ot the pimons as indicated 1n Fig. 9.

As the bott-om shaftconti'nues torota-te the lever is gradually raised by the spiral for-mation of the cam until the shoe again appears in theA position shown in Fig. 7 two picks later. A. l y

in providing for the lubrication of the box motion hereinbefore described I bolt an` oil box or case 82 to the 'frame33, said boxvhaving a bottom 83 inclined as indicated in Fig. 4 with provision for draining and having vertical walls 84. 'A cover 85 rests on the top oi' the walls as shown in Figs. 2 and 4 kand has a depending'ilange extending inside kthe walls 84, said cover having openings 87 for the box lifter rods located to one side oir the plane oi Ithe `master gear and said cover isrecessed .as at v88, see Fig. 10, to permit lthe passage :therethrough oi the l1nks34 and The cover rests on the box of its own weight and is held against displacement by the flange 86. The wall 33 has extending therethrough an oil-tightbnshing 89 through which the Abottom shaft 4U.r extends, said bushing being threaded into the bearing 45 and preventing leakage of oil.

As shown in Figf4 the bottom-oi the box may be provided' with oil to the level indicated at L, the oil being sufficiently high so that as the segments 42a-nd 43 rotate they will be immersed in the oil to splash the saine and carry-some of the latter into engagement, withA the pinions when the boxes are to change. The lever 72 is also located v so, .th,at whenit is depressed quickly by the l l (i lao i shaft extends.

high point 80 of the cam 79 it will splash the `oil and thus providefor lubrication of the parts. y

The cam shown in 6 possesses anadvantage not found in the cams shown in my prior Patent No.-764,888 in that the springs 76 and 77 shown herein move upwardly kbodily whenthe shoe is approaching the lowpart 8l of the cam. During this movement the spirngs are under a normal tension sutiicient lto prevent undue movement of the pinions, and this normal tension is preserved by havingboth ends of the springs raised, thus avoiding additional stressing of the springs and locking levers due to lifting` of the latter by the pins 64 vwhen the pinions are` tur-ning. This feature is absent in my aforesaid patent.

From the foregoing it will kbe seen that I have provided ya box motionk the actuating parts of which are located in an oil boxor case and that oil is located in the case to a depth suflicient to cause splashing when the segments' of the master gear are iny the lower part of their movement, the teeth of the segs ments carrying some of the oil upwardly and onto the pinions and adjacent parts. lt will be seen' that the openings in the cover for the lifter rods are out of alignment with' the planes in which the segments rotate so that oil cannot fly out through said openings. From ankinspection of Fig. l it will be noted that the links which are controlled by the pinions and operatively connected to the systemof compoundlevers pass through thetop of the case along the line of division between the box land the cover so that the latter cany be removed without disturbing said links 34 and 36. Furthermore, it will be seen that the lever which controlsr the springs 76 and 77 is given a sudden downward .movement by the point 8O of'cam 79,. said lever moving into the oil by the motion of the cam te cause agitation of the oil in addi-tion to that caused by the master gear. Reference to Fig. a will also show that the inner wall of the case is provided with an il-tight bearing through which the bottom Itwill further be noted that the locking levers are independently movable, each beine' stressed by its spring, and

that said springs are mounted on the lock?,L

ing and cam levers and serve to check the pinions without the use of a third springr as is the case in my aforesaidpatent.

Having thus described my invention it will be apparent that changes and modifica-` tions may be made therein by those skilled in the art Without departing from the spirit and scope oflthe invention, and I do not .wish to be limited to the details herein disclosed, but

What I claim is:

l. In a drop box loom, a constantly rotatingr member, a pinion to be actuated by the member, a locking lever to position said pinion at the end of the movement thereof, a controllever for the locking lever mounted independently thereof, resilientl means located between the control and locking levers,

yan oil casing enclosing the member, pinion,

and levers,y and means to give said control lever a periodic downward'movement into the oil contained inthe casing tokagitatevy the loil for the vpurpose of lubricating lthe parts contained in the'casing; l i f 2. In a box motion for looms, a regularly moving actuating member, a box controlling element to be actuated thereby, a cam moving with the member, a pair of levers one to cooperate with the cam and one to check the element, and resilient meanseonnecting said levers and tending to hold one lever against the cam and the other lever in checking relation` with the element.

3. In a box motion forI looms, a regularly moving actuating member, a box controlling elementto be actuated thereby, a camfmovingwith the member, a pair of levers one ing said levers. 7

5. In a loom box motion having an actu n ating member, a rotatable element to cooperate with the member and ybev given angularmovements thereby, acam moving in timed relation with the member, and a pair of resiliently connected levers lyingy on opposite sides of the cam, one of said levers to cooperate with the element to resist movement thereof and the other'fof vsaid levers to cooperate with the cam,`sa-id levers moving together under influenceof the cam to offer light resistance to the element at the beginning of an angular movement of the latter and said levers moving in opposite directions as the element nears the end of an angular movement tofotler increased resistance to the movement of the element..

6. In a loom box motion having an actuating member, a rotatable eleii'ient forming part of the box motion, a lock lever to cooperate with the element andmovable by the latter as the same rotates,a contro-l member for said lock lever operatively connected to the latter, and means to cause said lock lever and control member to move in the same direction at the beginning of an angular movement of the element and to move in opposite directions to stress the lock level yas the. element nears the end of its angular movement. Y Y

v7. In a loom boxinotion having an actuating member, a 4rotatable ele-ment forming part oit the box motion, a lock lever to cooperate with the element and movable by the latter as the sa y 'ie rotates, a control ineinber lfor the lool: lever, resilient means interposed betiveen the lock lever and the control member `and tending to draw` said partstogether.y and means moving in timed relation with the actuating member-and operatively relatedv to the control member causing` said lock lever, control member and resilient means to go in thesaine direction at the beginning of an angularmovement of the element and causing said lock lever and controlling member to move in opposite directions to stress the resilient means as the element nears the endl of its angular movement.

8.` In a loom'box motion having an actuating inember,-a rotatable element forming part of the box motionx a loci-2 lever to cooperate with the element and ii'iovable by the latter as the saine rotates, a control member resiliently connected to the locking lever, and means acting in 'timed relation with the actuating member to cause said lock.

lever and control member to move in the saine direction at the beginning ot an angular movement ot' the rotatable element andto move in opposite directions to stress theY locking lever as the rotatable element nears the end ot an angular movement.`

`9. In a leoni box motion having;- a rotating actuating member and an angnlarly niovable element 'forming part oit a boi; motion and beinggiven angular inovenients by the actuating member, a: pair or' independently movable devices` resiliently connected together,

one offsaid devices serving to resist movement. ot the rotatable element, and means to cause said devices to move in the saine direction at the beginniiiv' of an anc-guiar movement ott-he rotatable element an to move in Opposite vdirections to resist movement of" the rotatable element as the latter nears the tively related to the other of said devices, said cam having a portion to cooperate with said other device whereby the latter moves in the same direction as the first named device .at the beginning of an angular movenient oi" the rotating element and. said cam having another surface to cooperate with the said other device whereby said devices will move in opposite directions to resist movement of the rotatable element when. the latter nears the end yot its angular movement.

ll. Inv a loom box motion having a rotating actuating ii'ieniber and an angularly movable element forming part ot a box motion and being given angular movements by the actua-ting member, a device to cooperate with the rotatab-lefeleinent to resist angular movement thereof-and movable by said element as the latter starts an angular' movement, asecond device operatively connected to the iirst device and capable of increasing the resista-nt force ot the firstnamed device evei'ted on said rotatable element,- and means moving' in timed relation with the actuating member to cause said devices'to move together at the beginn-ing of an angular movenient oi the rota-table element-to exert a relatively light resistant torce on said element and to cause said devices to change their relative inoveii'ieiits as the` elcnient nears the end ot' an angular movement to'exeit av relativi-ily large resistant 'force to the Inoveiiient of said element.

l2. In a loom box motion 'having a rotating actuating member and an angularly niovable element forming partei: a box inotion and being given angular movements by the actuating member, a lock lever to be operatively related 'to` the element and to resist movement thereof and to be moved thereby as said element begins an angular movement, a second device resilientl-y lconnected to the. tirst device, a cam moving in timed relation with the actuating member and operatively related to the second named device, said caiii having a divell portion and having also high and low portions relatively to the divell portion, saidloiv portion being presented to the second nanied device as the rotatable element begins an angular movement and said high portion being presented to said second device as the rotatable element nears the end ot an angular movement.

In testimony Whereot I liavefhereunto afl fixed my signature.

ALBERT A. GORDQN CII 

